[dotnet] Allow UTF-16 tolerant string converter as a dictionary key

[RenderMichael]

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Allow UTF-16 tolerant string converter as a dictionary key

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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PR Type

Enhancement

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Description

• Updated StringConverter to handle nullable strings.

• Added methods to read and write property names in JSON.

• Enhanced UTF-16 string handling in JSON serialization.

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Changes walkthrough 📝

	Relevant files
Enhancement	StringConverter.cs Enhanced `StringConverter` for nullable strings and property names dotnet/src/webdriver/DevTools/Json/StringConverter.cs Changed StringConverter to support nullable strings. Added ReadAsPropertyName and WriteAsPropertyName methods. Updated Write method to handle nullable strings. +12/-2

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[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Null Handling The ReadAsPropertyName method returns raw string without the UTF-16 escape sequence handling that is implemented in the Read method. This could lead to inconsistent string handling between property names and values. public override string? ReadAsPropertyName(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { return reader.GetString(); }

[qodo-merge-pro]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Score
Possible issue	Add null validation for property names Add null check in WriteAsPropertyName since property names cannot be null in JSON dotnet/src/webdriver/DevTools/Json/StringConverter.cs [67-70] public override void WriteAsPropertyName(Utf8JsonWriter writer, string value, JsonSerializerOptions options) { + if (value == null) throw new ArgumentNullException(nameof(value)); writer.WritePropertyName(value); } Apply this suggestion Suggestion importance[1-10]: 8 Why: Property names in JSON cannot be null, so adding null validation is crucial to prevent runtime errors and provide clear error messages. This is an important defensive programming practice.	8
	Validate JSON writer parameter Add writer null check in Write and WriteAsPropertyName methods to prevent NullReferenceException dotnet/src/webdriver/DevTools/Json/StringConverter.cs [59-60] -public override void Write(Utf8JsonWriter writer, string? value, JsonSerializerOptions options) => +public override void Write(Utf8JsonWriter writer, string? value, JsonSerializerOptions options) +{ + if (writer == null) throw new ArgumentNullException(nameof(writer)); writer.WriteStringValue(value); +} Apply this suggestion Suggestion importance[1-10]: 7 Why: Adding null validation for the writer parameter is a good defensive programming practice that prevents NullReferenceException and provides clearer error messages. This improves the robustness of the code.	7

[nvborisenko]

Thanks!